The golden rule of tourism is that the most exclusive locations and activities are always the most expensive. Space tourism reinforces this theory a great deal – it’ll cost you $20million to take a trip into orbit and visit the ISS, and should you wish to sample the local sights outside your accomodation, a supplementary spacewalk will set you back another $15million…most of which is probably insurance fees, I’m assuming. High time I got a decent savings plan going.